Sistemas Pi Delocalizados

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290 Chapter 14 DELOCALIZED Pi SYSTEMS: INVESTIGATION BY ULTRAVIOLET AND VISIBLE SPECTROSCOPY in preference to addition to E + E⁺ X primary secondary (less stable) Final products in each case have already been given in the solution to Problem 51. (a) + + H H :I:- :I:- Br Br (b) + + Br Br H₂O: H₂O: Br Br H + H H H (c) + + I I + N N N: + (d) + H + H H H + H + CH₂CH₃ H CH₂CH₃ 53. (a) D D I and I